Magnetic sensors and magnetometers

摘要: The object of this book is to present the principles, instrument designs and applications available magnetic transducers. In order accomplish task, author begins with a fundamental chapter that focuses on phenomenological magnetism, units sensor specifications. continues by dedicating full each family: Induction, Fluxgate, Magnetoresistor, Hall effect, Magneto-optical, Resonance, SQUIDS other principles. It ends three chapters applications, testing, calibration sensors for non-magnetic variables. Various authors have contributed some chapters. spite this, content, presentation, opinion notation are consistent throughout uniform. Furthermore, can be read individually without losing its scope. author(s) focused devices developed or under prototyping commercial public institutions. book's objectives also get an insight into design properties specific application understand limitations and/or suitability sensor. Each therefore accompanied extensive list scientific technical material provides good reference those interested in further reading. There number books treating materials their applications. However, often only point view given. Magnetic Sensors Magnetometers comprehensive practice transducers bases many contributions from different experts field. Indeed, professionals researchers (or will have) need at transducer, nature very building designing most suitable solution application. hints connecting electronic devices, such as amplifier noise matching, etc. may interest teachers, students universities, instrumentation designers users like. appropriate comment various reader know what found them: Basics (by Hauser Ripka 25 references): types specification. Induction 29 refs) describes air coils limitations, ferromagnetic cores, induction-based techniques rotating, moving, extracting vibrating coils. Fluxgate 159 presents principle transducer geometries. Several aspects widely used type discussed more detail: demagnetization, core materials, second-harmonic analogue magnetometer, nonselective detection, short-circuited current-output, offset stability. Also, described. Magnetoresistors Tondra 32 illustrates anisotropic magnetoresistance effect utilized thin films giant phenomenon. Hall-effect Popovic et al 51 basic thin-film elements. integrated multi-axes presented. Magneto-optical Didosyan 33 Faraday Kerr effects description magneto-optical current transformer. Resonance Primdahl 52 proton precession Overhauser variant optically pumped magnetometers. SQUIDs Fagaly 38 operations regard cancellation, input circuits, refrigeration gradiometry. Other Principles Kraus 39 describes, among others, magnetoimpedance, magnetoelastic magnetostrictive biological Application Acu na 72 navigation, automotive, military, testing planetary fields. Testing Calibration Instruments Sasada shieldings. Nonmagnetic Variables 40 interesting how use measure physical like position, proximity, force, pressure, torque, current, Appendix. Sensors, Equipment Manufacturers. gives fairly manufacturers Overall, I recommend working related areas. highly relevant contains valuable amount material. Jose M G Merayo